3.04 Sensory functions
and disorders of the
tongue and skin
3.04 Understand the functions and
disorders of the sensory system
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3.04 Understand the functions and
disorders of the sensory system
Essential Questions
• What are the functions of the sensory system?
• What are some disorders of the sensory system?
• How are sensory system disorders treated?
• How do you relate the body’s communication to
the sensory system?
3.04 Understand the functions and
disorders of the sensory system
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Understanding the
functions of the tongue
3.04 Understand the functions and
disorders of the sensory system
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Understanding the
functions of the tongue

Gustatory receptors
(taste buds)
3.04 Understand the functions and
disorders of the sensory system
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Taste Trivia
Did you know???



An adult has on average
9,000 taste buds (a child even
10,000)
More buds means the
individual perceives more
types of taste
The spicy foods (like chili
peppers) stimulate the pain
receptors, not the taste buds
3.04 Understand the functions and
disorders of the sensory system
5
Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and
disorders of the sensory system
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Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and
disorders of the sensory system
7
Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and
disorders of the sensory system
8
Structures of the tongue: taste buds
Agreeable or disagreeable?
Identify the taste bud.
3.04 Understand the functions and
disorders of the sensory system
9
Understanding the
functions of the tongue

Taste
3.04 Understand the functions and
disorders of the sensory system
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Sense of Taste
What is the relationship between the
sense of taste and the sense of smell?
3.04 Understand the functions and
disorders of the sensory system
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Understanding the
functions of the tongue
Taste Activity
Do you like all of your taste buds?
3.04 Understand the functions and
disorders of the sensory system
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Disorders of the tongue
Glossitis

Gloss itis

What is it?

What are the benefits of good oral hygiene in treatment
and prevention of glossitis? It reduces inflammation. Avoid
irritants such as hot or spicy foods, alcohol or tobacco.
3.04 Understand the functions and
disorders of the sensory system
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Disorders of the tongue
Strawberry
tongue due to
scarlet fever
How are disorders of the tongue relevant to taste?
3.04 Understand the functions and
disorders of the sensory system
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Disorders of the tongue:
Thrush
What is it? A yeast infection that causes white
patches in your mouth.
Who most likely gets it? People with
weakened immune systems, using antibiotics or
taking cancer drugs or corticosteroids.
How is it treated? Antifungal medications
How are disorders
3.04 Understand
of the the
tongue
functions relevant
and
to health?
disorders of the sensory system
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The Skin
3.04 Understand the functions and
disorders of the sensory system
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Understanding the sensory
functions of the skin
Touch
 Tactile corpuscles
(receptors)

Temperature
sensors

Pain receptors
Referred pain
 Phantom pain

3.04 Understand the functions and
disorders of the sensory system
17
Understanding the
functions of the skin
Touch
3.04 Understand the functions and
disorders of the sensory system
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Understanding the
functions of the skin
Touch Activity
Guess what’s in the bag?
Shhh…
3.04 Understand the functions and
disorders of the sensory system
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Disorders of the skin
How do you think the disorders of the skin
pictured impact the sensory function of the skin?
Burns
Dermatitis
3.04 Understand the functions and
disorders of the sensory system
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3.04 Understand the functions and
disorders of the sensory system
Essential Questions
• What are the functions of the sensory system?
• What are some disorders of the sensory system?
• How are sensory system disorders treated?
• How do you relate the body’s communication to
the sensory system?
3.04 Understand the functions and
disorders of the sensory system
21
3.04 Sensory functions and
disorders of the tongue and skin
The End
3.04 Understand the functions and
disorders of the sensory system
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